The issue has been a grey area in consumer rights law for several years - albeit never tested in the courts - after the European Commission announced a review of its Distance Selling Regulations in 2007.
Read more at http://www.decanter.com/news/wine-news/587182/en-primeur-wine-buyers-have-no-right-of-return-says-eu#vVoF3ImYl8rTozB4.99